Checking battery history

Check how long you've been using
HTC One X/One X‍+ since the last charge.
You can also see a chart that shows how long the screen has been on, and how long you've been using connections like the mobile network or
Wi-Fi.

Go to Settings, and then tap
Battery Manager.

Tap
History.

If you've used
HTC One X/One X‍+ for a long time since the last charge, swipe left or right to scale the graph that details battery usage over time.